added pow module (not used yet)

onionr/pow.py

@@ -0,0 +1,62 @@
+'''
+    Onionr - P2P Microblogging Platform & Social network
+
+    Proof of work module
+'''
+'''
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+'''
+import nacl.encoding, nacl.hash, nacl.utils, time, math, threading, binascii, logger
+class POW:
+    def pow(self):
+        startTime = math.floor(time.time())
+        self.hashing = True
+        iFound = False # if current thread is the one that found the answer
+        answer = ''
+        heartbeat = 200000
+        hbCount = 0
+        while self.hashing:
+            if hbCount == heartbeat:
+                logger.info('hb')
+                hbCount = 0
+            hbCount += 1
+            token = nacl.hash.blake2b(nacl.utils.random()).decode()
+            if self.mainHash[0:self.difficulty] == token[0:self.difficulty]:
+                self.hashing = False
+                iFound = True
+                break
+        if iFound:
+            logger.info('Found token ' + token)
+            endTime = math.floor(time.time())
+            logger.info('took ' + str(endTime - startTime))
+    
+    def __init__(self, difficulty):
+        self.foundHash = False
+        self.difficulty = difficulty
+
+        logger.info('Computing difficulty of ' + str(self.difficulty))
+
+        self.mainHash = nacl.hash.blake2b(nacl.utils.random()).decode()
+        self.puzzle = self.mainHash[0:self.difficulty]
+        logger.info('trying to find ' + str(self.mainHash))
+        tOne = threading.Thread(name='one', target=self.pow)
+        tTwo = threading.Thread(name='two', target=self.pow)
+        tThree = threading.Thread(name='three', target=self.pow)
+        tOne.start()
+        tTwo.start()
+        tThree.start()
+        return
+
+    def shutdown(self):
+        self.hashing = False